Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Stockholders' Equity, Dividend Declaration (Details) - $ / shares	Feb. 12, 2018	Nov. 08, 2017	Aug. 10, 2017	May 25, 2017	Feb. 01, 2017
Dividend Declared 2018 Q1 [Member] \| Subsequent Event [Member]
Dividends Payable [Line Items]
Cash dividend declared (in dollars per share)	$ 0.07
Dividend declared date	Feb. 12, 2018
Dividend payable date	Mar. 15, 2018
Dividend record date	Feb. 28, 2018
Dividend Declared 2017 Q1 [Member]
Dividends Payable [Line Items]
Dividend declared date					Feb. 01, 2017
Cash dividend paid (in dollars per share)					$ 0.06
Dividend payable date					Mar. 15, 2017
Dividend record date					Feb. 15, 2017
Dividend Declared 2017 Q2 [Member]
Dividends Payable [Line Items]
Dividend declared date				May 25, 2017
Cash dividend paid (in dollars per share)				$ 0.06
Dividend payable date				Jun. 15, 2017
Dividend record date				Jun. 05, 2017
Dividend Declared 2017 Q3 [Member]
Dividends Payable [Line Items]
Dividend declared date			Aug. 10, 2017
Cash dividend paid (in dollars per share)			$ 0.06
Dividend payable date			Sep. 15, 2017
Dividend record date			Aug. 31, 2017
Dividend Declared 2017 Q4 [Member]
Dividends Payable [Line Items]
Dividend declared date		Nov. 08, 2017
Cash dividend paid (in dollars per share)		$ 0.06
Dividend payable date		Dec. 15, 2017
Dividend record date		Nov. 30, 2017